Technikatörténeti szemle 20. (1993)

TANULMÁNYOK - Tihanyi Glass, Katalin: The Iconoscope: Kalman Tihanyi and the Development of Modern Television

Eye = Proceedings of the Institute of Radio Engineers (Jan. 1934). 14. U.S. Pat. 1,691,324/July 13, 1925 appl., issued Nov. 13, 1928. 15. Correspondence between K. Tihanyi and Prof. F. Schröter, April 1940. (In the author's property) 16. Hungarian Pat. T-3768/ March 20, 1926; German appl. 424822/June 11,1928; German appl. 482422/July 3, 1928; Hungarian appl. 9780/1928; Fr. Pat. 676.546/June 11, 1929; Br. Pat. Spec. 313.456/June 11, 1929; Br. Pat. 315.362/July 10, 1929; U.S. Pat. 2,133,123 and 2,158,259/June 10, 1929. 17. See Tihanyi correspondence with F. Schröter, V. Babits, and T. Kiss. With regard to the latter, apparently mention had been made of the patents of H. J. Round and Pierre Henroteau (U.S. Pat. No. 1,759,594, conv. date May 21, 1926, respective Br. Pat. No. 335,995/June 4, 1929). These patents were first brought up by Schröter in 1937 as parallel suggestions for storage. However, as Tihanyi pointed out, both patents were filed subsequent to his 1926 application and, although both proposals feature arrangements where the photoelectric surface Is exposed to the light from the picture during the scansion cycle, both utilize merely the minute local capacity of the elemental photosensitive areas. In addition, Tihanyi points out, neither plan featured cathode ray for the scanning, and neither ever served as a basis for a practical television system. (In the author's property) 18. P. Vajda: Nagy magyar feltalálók, Budapest 1958, pp. 356. P. Vajda: Nagy Magyar Feltalálók, kiállítás, A kiállításon szereplő feltalálók ismertetése, Budapest 1973, pp. 3. P. Vajda: Újabb adatok a híradástechnika magyar úttörőire vonatkozóan = Technikatörténeti Szemle Í973/74, VII. pp. 89-92. P. Vajda: Magyar Alkotók — Creative Hungarians, Budapest 1975, pp. 64-65. P. Vajda: Creative Hungarians in Mathematics, Astronomy, Physics, Chemistry, Technical Sciences and Industry = Technikatörténeti Szemle 1979, XI. pp. 69-70. 19. P. Vajda: Nagy Magyar Feltalálók exhibit. A kiállításon szereplő feltalálók ismertetése, Budapest 1973, pp. 3. 20. F. S. Wagner: Hungarian Contributions to World Civilization, De Kalb Pike 1979, pp. 68-69; A. Abramson: The History of Television, 1880 to 1941, Jefferson, North Carolina, 1987, pp. 119; Elma G. Farnsworth: Distant Vision; Romance and Discovery on an Invisible Frontier, Salt Lake City, Utah, 1989, pp. 157-158. 21. German patent 30105/1884. 22. A. A. Campbell Swinton: Scientific Progress and Prospects = Nature. December 7, 1911, pp- 191-195. 23. V. K. Zworykin: The Iconoscope — A Modern Version Of The Electric Eye = Proceedings of the Institute of Radio Engineers, January 1934, pp. 18 and 23. ,